<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>旋转按钮</title>
    <style>
        ul li{
            display: inline-block;
            list-style: none;
        }
        img{
            transition: all 1s ease;
            /*ease：*/
                    /*1、ease：（逐渐变慢）默认值*/
                    /*2、linear：（匀速）*/
                    /*3、ease-in：(加速)*/
                    /*4、ease-out：（减速）*/
                    /*5、ease-in-out：（加速然后减速）*/
                    /*6、cubic-bezier*/
        }
        img:hover{
            transform: rotate(360deg) scale(1.2);
        }
    </style>
</head>
<body>
<ul>
    <li><a href="#"><img src="image/xuanimages/delicious.png" alt=""></a></li>
    <li><a href="#"><img src="image/xuanimages/facebook.png" alt=""></a></li>
    <li><a href="#"><img src="image/xuanimages/rss.png" alt=""></a></li>
    <li><a href="#"><img src="image/xuanimages/twitter.png" alt=""></a></li>
    <li><a href="#"><img src="image/xuanimages/yahoo.png" alt=""></a></li>
</ul>
</body>
</html>